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(a) Oxygen gas reacts with powdered aluminum according to the following reaction: 4Al(s)+3O2(g)→2Al2O3(s) What volume of...

(a) Oxygen gas reacts with powdered aluminum according to the following reaction: 4Al(s)+3O2(g)→2Al2O3(s)

What volume of O2 gas, measured at 771 mmHg and 35 ∘C, is required to completely react with 54.1 g of Al?

(b) Automobile air bags inflate following a serious impact. The impact triggers the following chemical reaction.
2NaN3(s)→2Na(s)+3N2(g)

If an automobile air bag has a volume of 12.2 L , what mass of NaN3 (in g) is required to fully inflate the air bag upon impact? Assume STP conditions.

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